Liquid-fuel-burning furnace.



C. VAN AMBURGH.

LIQUID FUEL BURNING FURNACE.

APPILICATION FILED MAIL24. I915.

LI'TKQEY. I Patented Mar. 28,1916.

3 SHEETSSHEET I.

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C. VAN AMBURGH.

LIQUID FUEL BURNING FURNACE.

APPLICATION FILED MAR.24. 1915.

1,177,067. Patented Mar. 28, 1916.

3 SHEETSSHEET 2.

THE COLUMBIA FLANUGRAPH c0, \vAsmNuTON, u. C.

C. VAN AMBURGH.

LIQUID FUEL BURNING FURNACE. APPLICATION FILED MAR. 24. 1915.

1,177,067. Patented Mar. 28,1916.

3 SHEETS-SHEET 3- Elma/"toe THE COLUMBIA PLANOGRAPH .Cu., WASHINGTON, D. C.

CHARLES VAN AMBURGH, OF TACOMA, WASHINGTON.

LIQUID-FUEL-BURNING FURNACE.

Specification of Letters Patent.

Patented Mar. 28, 1916.

Application filed March 24, 1915. Serial No. 16,782.

To all whom it may concern:

Be it known that I, CHARLES VAN AM- BURGH, a citizen of the United States, residing at Tacoma, in the county of Pierce and State of Washington, have invented certain new and useful Improvements in Liquid-Fuel-Burning Furnaces, of which the following is a specification.

The primary object of this invention 1s the utilization of liquid fuel in boiler furnaces of every type and make, whether of the locomotive, marine or stationary variety.

The purpose of the invention is to obtain a nearly perfect combustion and an equal1- zation of the heat, thereby preventing the opening of the flue and sheet joints, as all parts expand and contract uniformly.

A further purpose of the invention is to supply air to the furnace in such a manner as to insure a uniform distribution thereof, with the result of promoting combustion and preventing thechilling of any part of the furnace which would tend to strain the joints and eventually cause themto leak.

The invention also aims to regulate the admission of the air proportionate to the amount of fuel to be consumed in a given time, so as to attain the best results in economy of consumptionofthe fuel andthe utilization of a maximum amount of the resultant heat units.

With these and other objects in view, which will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly claimed.

In the accompanying drawings hasbeen illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifica tions within the scope of the invention as claimed may be resorted to when desired.

Iteferring to the drawings, Figure 1 is a longitudinal section of a locomotive boiler provided with a fire box of the extended wagon top type; Fig. 2 is a transverse section on the line 2-2 of Fig. 1; Fig. 3 is a horizontal section on the line 33 of Fig. 1; Fig. 4: is an enlarged side view; F ig. 5 is an enlarged cross section of the lower portion of the fire box; Fig. 6 is an enlarged longitudinal section of fire .box.

Corresponding and like parts are referred to 1n the following description and inclicated in all the views of the drawings by thesame reference characters.

The numeral 1 designates the fire box of a locomotive boiler of the extended wagon top type. The lower portion of the fire box comprises a bottom and inclosing walls of refractory material, such as tile or fire brick. The upper portion of the fire box is inclosed by the boiler sheets which inclose a water space, such sheets being closed at their lower edges by means of a mud ring 2. A burner 3 is located atone end of the fire box preferably at the front thereof and may be of any construction or type, such as is generally employed for burning liquid fuel. It is to be understood that one or more oilburners may be employed depending upon the size of the fire box. The burner 3 extends through an opening formed in the front wall of the fire box and is adapted to be connected by means of a pipe with a source of supply of oil or other suitable fluid fuel.

The bottom and walls of the lower portion ofthefire box are formed Wltllit plurality of air inlets, the same being so disposed as to insure a uniform distribution of the air and equalization of the heat, thereby preventing unequal expansion and contraction of the boiler sheets and flues with the result that the joints of such parts are not subjected to strain beyond the ordinary. The several bottom air inlets lead from air passages. The air inlets incline away from the fuel burner with the result that the incoming jetsof air flow in the direction of the flame and commingle therewith in a manner to promote combustion and evenly distribute the heat. The bottom 4 of the fire box is formed with plural air passages 5 which preferably open at opposite ends at the sides of the fire box, this being of advantage in economy in regulating the inflow of the air as will appear more fully hereinafter. The air passages 5 may be lined if desired in which case metal tubing will be inserted in the air passages and serves in a great measure to stiffen and strengthen the bottom particularly when the same is constructed of tile 'or similar refractory material. Outlets 6 extend from the air passages 5 and incline upwardly and rearwardly away from the the lower portion of the burner so as to cause the incoming jets of air to flow in substantially the same direction as the flame so as gradually to intermingle therewith. The outlets 6 like the passages 5 may likewise be lined with short lengths of metal tubing which are joined to the tubes introduced in the passages 5. In the preferable arrangement the air Passages 5 extend transversely of the fire box in parallel relation and are of larger diameter than the outlets 6 so that a number of outlets may lead from each of the air passages. It will thus be seen from Fig. 3 that the outlets 6 are in parallel rows and have a staggered arrangement although this is not essential but is preferable from an economic standpoint of construction.

Air passages 7 are formed in the side walls of the lower portion of the fire box and incline upwardly and rearwardly from their outer ends so as to discharge the jets of air in the direction of the flame so as to mix therewith in a more thorough manner, thereby equalizing the heat and promoting combustion to better advantage. The passages 7 may be lined with metal tubing if desired. The passages 7 are preferably disposed in a straight line and are open at their ends. The receiving or outer ends of the passages 7 are located above the inlet ends of the air passages 5, hence the admission of air to both sets of passages may be regulated by the same means.

In order to control the supply of air and admit the same into the fire box in regulated quantity, a damper 8 is located at each side of the lower portion of the fire box and in position to cover the outer or receiving ends of the passages 5 and 7. The damper 8 consists of a metal plate of suitable length and width slidably mounted in guides 9 provided at the sides of the fire box and attached thereto in any manner. The damper 8 is formed with upper openings 10 and lower openings 11, the openings 10 being adapted to register with the outer or receiving ends of the air passages 7 and the openings 11 being disposed to register with the outer ends of the air passages 5. Longitudinal movement of the damper exposes the passages 7 and 5 more or less and admits of the air being supplied to the fire box in regulable quantity as existing conditions may demand. The dampers 8 are preferably connected for simultaneous movement and any suitable means may be provided for this purpose. For the sake of illustration a rock shaft 12 is disposed. at one end of the fire box and is suitably mounted and is provided at its ends with arms 13 which are connected by links 14: with the dampers 8. The rock shaft 12 may be operated from any convenient point by means of a rod 15 which for the sake of illustration is shown coupled to an arm 16 projecting from the rock shaft 12.

The fuel utilized in the burner 3 may be oil or other fluid fuel. The flame from the burner is directed along the length of the fire box and meets with air issuing from the several outlets in the form of jets. These air jets commingle with the flame and promote combustion of the fuel and equalize and distribute the heat with the result that the sheetsand fines of the boiler are uniformly heated, thereby preventing the joints being subjected to unusual strain which would tend to open them and result in leak. The air may be admitted into the fire box in regulable quantity by proper adjustment of the dampers 8 which may be moved from any convenient position substantially in the manner hereinbefore stated.

The invention is not restricted in its application and may be applied to furnaces of any type or make utilizing fiuid fuel. In adapting the invention to any style of furnace it is to be understood that various changes in the form, proportion and minor details of construction may be resorted to without departing from the nature of the invention and scope thereof as defined in the appended claims.

The fuel, as herein stated, maybe of any nature, whether disintegrated or vaporized, and the burner may be of such constructionas best adapted to the fuel.

Having thus described the invention, what is claimed as new is l. A furnace fire box having a plurality of horizontal passages formed in its bottom and having outlets extending upwardly from the horizontal passages through the upper surface of the bottom, and a damper at one side of the fire box for closing the adjacent ends of the horizontal passages.

2. A furnace fire box having a plurality.

tom, and dampers at the sides of the fire box for closing the endsof the horizontal passages.

3. A furnace fire box havin a plurality of horizontal passages formed in its bottom and opening through the sides of the fur nace and having outlets extending upwardly from the horizontal passages through the upper surface of the bottom, said fire box having other passages in its side walls opening into the fire box, sliding dampers at the sides of the furnace for closing the horizontal passages and the passages in the side walls of the furnaceQand means for. operating both dampers simultaneously.

4. A furnace fire box formed in its bottom with a plurality of air passages which open outwardly through a side thereof and hav-.

outer Walls, the air passages in the bottom In testimony whereof I afilx my signature having a plurality of outlets extending in presence of tWo Witnesses. therefrom through the upper surface of the b CHARLES VAN AMBURGH. [L- 8.]

ottom, and a slngle damper for slmultaneously controlling each set of side openings Witnesses:

and the adjacent ends of the horizontal J. W. Hoops,

passages. M. P. Prorr.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

